Not too bad if you get a mellow one. All the pet russels Ive known have all had some sort of mental problem, Mine included. I cant take mine for a 8 mile stomp, off lead, she will work cover all day, get torn and ripped ears, nettle stung to f**k, follow deer scent over the horizon and still 20 minutes after getting in, will want to play fetch incessantly, right pain in the arse sometimes with her yapping too. Hectic is an understatment, but shes also very highly strung some days. But, for all her faults, I wouldnt part with her, for starters shes got a much better nose than my pat.